Odpowiedź :
1.Jakie liczby należy wpisać w miejsca oznaczone kropkami ?
a) 1 dm² =10000 mm²
2 m² =20000cm²
4 a =40000dm²
25 ha =250000m²
50 a =5000m²
2 km² =20000a
a) 1 dm² =10000 mm²
2 m² =20000cm²
4 a =40000dm²
25 ha =250000m²
50 a =5000m²
2 km² =20000a
1dm² = 10cm * 10cm = 100mm * 100mm = 10000mm²
2m² = 100cm * 200cm = 20000cm²
4a = 400m² = 40000m²
25ha = 250000m²
50a = 5000m²
2km² = 1km * 2km = 1000m * 2000m = 2000000m² = 20000a
2m² = 100cm * 200cm = 20000cm²
4a = 400m² = 40000m²
25ha = 250000m²
50a = 5000m²
2km² = 1km * 2km = 1000m * 2000m = 2000000m² = 20000a